Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-04-25
2006-04-25
Desai, Rita (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
07034158
ABSTRACT:
The invention relates to a method for producing biperiden which is characterized in that an exo/endo mixture of 1-(bicyclo[2.2.1]hept-5-en-2-yl)-3-piperidino-1-propanone is reacted with an isomer ratio of the exo form to the endo form of at least 2.5:1 with diphenyl magnesium, an isomer mixture containing biperiden is obtained therefrom and biperiden is produced therefrom.
REFERENCES:
patent: 2789110 (1957-04-01), Klavehn
patent: 6835839 (2004-12-01), Klein et al.
patent: 1 0 05 067 (1957-03-01), None
patent: 11189729 (1999-07-01), None
patent: WO 02/094800 (2002-05-01), None
Ronald Breslow and Uday Maitra, On the Origin of Product Selectivity in Aqueous Dies-Alder Reactions, Tetrahedron Letters. vol. 25. No. 12, pp 1239-1240, 1984, Great Britain.
Ullmans Enzykopadie der technischen Chemie, 4thEdition, vol. 21, Verlag Chemie, 1982, p. 627.
J. G. Dinwiddie and S. P. McManus (J. Org. Chem., 1965, 30, 766).
Kastner Gerhard
Scheib Klaus
Abbott & GmbH & Co. KG
Desai Rita
Wood Phillips Katz Clark & Mortimer
LandOfFree
Method of producing biperiden I does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of producing biperiden I, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing biperiden I will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3623153